Here's a look at what unfolded after a freight train carrying hazardous materials derailed on Feb. 3 near East Palestine, Ohio.

Federal investigators confirmed Tuesday that a hot railcar wheel bearing caused the massive 2023 derailment and fire of a Norfolk Southern train in Ohio.

Researchers estimate that 110 million residents, or one-third of the nation's population, were impacted by pollution.

Whistleblower claims EPA wasted critical time after devastating Ohio train derailment.

Norfolk Southern has agreed to a $600 million settlement to resolve a class action lawsuit related to the train derailment in East Palestine, Ohio, in February 2023.

President Joe Biden visited East Palestine, Ohio, on Friday to mark one year since a train derailment spilled hazardous materials and toxins into the environment.

One year after a freight train derailed and spilled toxic chemicals in East Palestine, Ohio, affected residents said they are still afraid for their safety.

New body camera footage has shown the evacuation efforts following the East Palestine toxic train derailment.

The National Transportation Safety Board will start taking sworn testimony Thursday as part of its probe into the toxic train derailment in East Palestine, Ohio.

Pennsylvania's Blackhawk School District sued Norfolk Southern over the East Palestine train derailment, alleging negligence.

Since the East Palestine derailment, legislators and railroad leaders have emphasized the need for more hazmat training among local emergency responders

Members of a CDC investigative team studying the health effects of the Ohio train derailment briefly became ill with symptoms including headache and nausea.

The DOJ is seeking fines for alleged violations of the Clean Water Act from Norfolk Southern in the East Palestine, Ohio derailment.

East Palestine, Ohio, resident Misti Allison testified to the U.S. Senate Committee on Commerce, Science and Transportation about the toxic train derailment

Sen. Bob Casey’s bill, set to be introduced Thursday, would create a new fund which would be used to reimburse emergency responders

Eight freight rail cars carrying corn syrup derailed near Topock, Arizona on Wednesday evening, according to BNSF Railway, not hazardous materials.

Ohio Attorney General Dave Yost said the state filed a lawsuit Tuesday against Norfolk Southern over last month's toxic train derailment in East Palestine.

Shaw declined to directly answer what Norfolk Southern would specifically do for affected families in Thursday's congressional testimony.

Norfolk Southern CEO Alan Smith is slated to testify Thursday before a Senate Committee in Washington in the wake of the toxic train derailment in East Palestine, Ohio.

Federal regulators are looking into Norfolk Southern's handling of an additional reported hazmat concern, just weeks after the derailment in East Palestine, Ohio.

U.S. safety investigators released a preliminary report into the derailment of a Norfolk Southern train carrying toxic chemicals in East Palestine, Ohio.

Four of the 28 cars of a Norfolk Southern train that derailed Saturday near Springfield, Ohio, were empty at the time of the accident, according to officials.

The announcement came as the Atlanta-based rail operator faced scathing criticism and scrutiny.

Pete Buttigieg is firing back at Republican critics of his response to the train derailment in East Palestine, Ohio, in a new interview

Bad smells from the toxic train derailment in East Palestine, Ohio, may be causing health issues.

Sherrod Brown touted the need for new bipartisan rail safety legislation weeks after the train derailment in East Palestine sparked an uproar.

Former President Donald Trump on Wednesday toured the Ohio town near a toxic rain derailment three weeks ago.

Biden's been pressed to visit the site since a Norfolk Southern freight train carrying hazardous materials derailed on Feb. 3.

A town hall in East Palestine, Ohio, Thursday became heated as residents confronted town officials and Norfolk Southern, demanding answers about the train derailment.

The CEO of Norfolk Southern, the rail company responsible for the East Palestine train derailment, has agreed to appear before a Senate committee next week.

Ohio Gov. Mike DeWine is visiting the train derailment site in East Palestine as track removal -- to clean up hazardous waste under the tracks -- is set to begin.

Ohio Gov. Mike DeWine joined "GMA3" to talk about the latest details on the state’s cleanup efforts and possible challenges to come.

Norfolk Southern said Friday it is giving an initial $300,000 to the East Palestine school district and reimbursing the fire department $825,000 for equipment.

As of Sunday afternoon, the federal interagency teams have had "more than 350 interactions" with East Palestine residents, according to FEMA.

"I don't feel safe in this town," said one resident, Jim Stewart. "You took it away from me. You took this away from us."

Michael McCaul said it was a "false choice" on whether the U.S. should prioritize domestic issues like the East Palestine train derailment or support for Ukraine

Union officials allege the freight rail industry discourages reporting incidents by retaliating against employees, creating an increasingly unsafe culture.

Tests appear to show East Palestine's water supply is safe following the toxic train derailment, but experts say more evaluation is needed.

In East Palestine, Pete Buttigieg will meet with community members affected by the crash as well as receive an update from the NTSB on their investigation

U.S. Secretary of Transportation Pete Buttigieg penned a sharply worded letter to Norfolk Southern Railway president and CEO Alan Shaw on Sunday.